Monkey-wrench.



No. 670,799. Patented Mar; 26, 190|. F. x. MILLER.

- MUNKEY- WRENCH.

(Applicacin med sept. 22, 1900.)

(No Model.)

nu STATES UNI FRANK X. MILLER, OF CHICAGO, ILLINOIS.

MONKEY-WRENCH.

SPECIFICATION forming part of Letters Patent No. 670,799, dated March26, 1901.

Application filed September 22, 1900. Serial No. 30,791. (No model.)

To all whom t may concern:

Be it known that I, FRANK X. MILLER, a citizen of the United States,residing at Ghicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Monkey-Wrenches; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled intheart to which it appertains to make and use the same.

This invention relates to improvements in monkey-Wrenches of the movableor sliding jaw type, and has for its object to provide a useful andconvenient device of this character, as Will be hereinafter set forth.

In the accompanying drawings, Figure l is an elevation of the deviceproper. Fig. 2 is a longitudinal section and part elevation of the same.Fig. 3 is a detached rear elevation of the wrench-bar and stationaryjaw. Fig. 4 is a transverse section on line 4, Fig. 1, looking in thedirection indicated by the arrow; and Fig. 5 is a transverse section online 5, Fig. 1.

A represents the stationary j aw B, the movable jaW; C, a bar on whichthe movable ja slides, and D the handle.

The bar C is provided along its inner edge with a series of teeth 6,forming a ratchetbar. The stationary jaw A is rigidly mounted on theupper end of this and the handle D secured to the end, as shown in Figs.1 and 2. The ratchet-bar is provided longitudinally with a slot 7, Fig.3, opening through from the outer edge. The movable jaw is provided Withan .aperture 8, opening from the outer edge into a chamber 9 in theinner part of the movable jaw, as shown in Fig. 2. The aperture 8 is inline with slot 7 and provides for the insertion of a push-pin l0, whicheX- tends in through slot 7 and has a ratchet-dog 11 mounted on theinner terminal end thereof. This dog is of some length, so as to have aconsiderable bearingarea, and is provided with a series of teeth 12,adapted to movably engage the correspondingly-toothed edge of theratchet-bar.

The body portion of a bow-spring 13 is secured to the ratchet-dog, asshown at 14, the respective ends of the spring having a Wideapartbearing on the adjacent Wall of thev chamber 9 in the movable jaw, as at15, Fig. 2. This spring acts to automatically hold the dog to a uniformbearing in its engaged locking position.

The ratchet-bar is provided on opposite sides With longitudinal grooves16, Figs. 1, 2, 4, and 5, for the reception of the inner ends of theguide-pins 17. The purpose of these pins is to retain the movable jaW inalinement as it is shifted back and forth and prevent the adjacentsurface of the jaw from contacting the toothed edge of the ratchetbar.

The handle D is provided With a chamber 18, to which access is affordedby a closingcap 19, having a hinged connection 20 and a locking-catch 21for retaining the cap in its closed position. This chamber may be usedas a receptacle for an oil-can 22 or any other object it may benecessary to have in conjunction with a Wrench.

By pressing on the protruding end of the push-pin the locking-dog isthrown out of engagement, when the sliding jaw may be moved in eitherdirection to the desired position. When the pressure is relaxed, thebow-spring throws the dog into engagement with the ratchet-bar and locksthe jaw against movement.

Having thus described my invention, what I claim as new, and desire tosecure 'by Letters Patent, is-

1. In awrench of the class described, the

combination with a bar,provided with ratchetteeth and having astationary jaw on one end and a handle on the other, a movable jaw,having a chamber formed therein, a dog, lo-

cated in said chamber and engaging the toothed side of said bar, apush-pin, inserted therethrough and having said dog rigidlyv mounted onthe inner end thereof, and a spring, adapted to hold the dog in itsengaged position, substantially as described.

2. In a Wrench of the class described, the combination With ahandle-bar, mounting a Stationary jaw and provided longitudinally with aslot and having ratchet-teeth along the inner edge thereof, of a slidingjaw, having a chamber formed therein and loosely mounted in position andadapted to be moved by hand, a dog, located in said chamber and engagingthe toothed edge of the bar, a push- IOO pin, inserted through said.slot and having the dog mounted on its inner end, and a spring, forreturning said dog to its'engaged position when the pressure on thepushpin is relaxed, substantially as described.

3. In a Wrench of the class described, the combination With a bar,having a handle on one end and a rigid jaw on the other and providedwith ratchet-teeth along the inn er edge, a movable jaw, loosely mountedon the bar, the longitudinal slot extending through the bar from edge toedge, a dog, chambered in the movable jaw and engaging saidratchetteeth, a push-pin, inserted through said slot,

Groes ing the movable jaw from having contact with the toothed edge ofsaid bar, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

FRANK X. MILLER.

Witnesses: n

L. M. FREEMAN, L. B. COUPLAND.

